Stress Analysis and Evaluation of a Single-row Radial-drawn Tube Header

Under the operating condition featuring a 2.2 MPa pressure,a finite element analysis and stress measurement have been conducted of an innovative butt-welded single-row radial-drawn tube header.The results of the analysis and measurement have been compared and analytically evaluated for the header in question.It is found that the finite element calculation result is in basic agreement with that of the actually measured stress distribution.A maximum stress occurs at the corner of the drawn head of the tube header.However,the stress can meet strength requirements and the fatigue life exceeds 106 cycles.